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18-meter antenna

An antenna and antenna signal technology, which is applied to antennas, antenna supports/installation devices, and devices that enable antennas to work in different frequency bands at the same time. and other problems, to achieve the effect of stable structure, increasing effective height and reducing workload

Inactive Publication Date: 2019-03-26
SICHUAN GANGZHENG ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to: provide a kind of 18 meters antenna, solve the low-wave antenna radiation efficiency, conventional antenna signal directivity is poor, signal strength is weak, poor receiving sensitivity at 1MHz-8MHz, the problem of uneven input impedance

Method used

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  • 18-meter antenna
  • 18-meter antenna

Examples

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Effect test

Embodiment 1

[0023] An 18-meter antenna is composed of an antenna amplification device, four antenna rods of different sizes, a loading coil, a variable variable, a base, a ground anchor, a pull rope, and a ground wire.

[0024] 1. The lower rod 9 is composed of a 304 stainless steel pipe with an outer diameter of Φ159mm and a wall thickness of 3mm, an aluminum pipe with an outer diameter of Φ150mm and a wall thickness of 4mm, and an insulator made of epoxy glass cloth pipe, with a height of 4703mm and a weight of 45KG.

[0025] 2. The middle rod 7 is composed of an aluminum tube with an outer diameter of Φ120mm and a wall thickness of 4mm, a cable tray and a connecting flange, etc., with a height of 4550mm and a weight of 23KG.

[0026] 3. The upper rod 4 is composed of an aluminum tube with an outer diameter of Φ90mm and a wall thickness of 3mm, a cable tray, a loading chamber and a connecting flange, etc., with a height of 4550mm and a weight of 14KG.

[0027] 4. The top rod 2 is compos...

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Abstract

The invention discloses an 18-meter antenna and relates to the field of antennas. The 18-meter antenna comprises an antenna signal amplifying device, a top rod, an upper rod, a middle rod, a lower rod, an upper sensor and a middle sensor. The 18-meter antenna is characterized in that the antenna signal amplifying device is fixed on the top of the top rod, the top rod is connected to the upper rodthrough the upper sensor, the upper rod is connected to the middle rod through the central sensor, and the middle rod is directly connected to the lower rod. The 18-meter antenna has the advantages that the 18-meter antenna has better directivity and has higher gain than that of a general antenna, a signal is enhanced, the effective height of the 18-meter antenna is raised, therefore, the radiation efficiency of the 18-meter antenna is raised, the antenna has wide frequency characteristic, a loading position is optimized, the workload of trial and error is greatly reduced, and the purposes ofdesign and application are achieved.

Description

technical field [0001] The invention relates to the field of antennas, in particular to an 18-meter antenna. Background technique [0002] An antenna is a transformer that transforms a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium, or vice versa. A component used in radio equipment to transmit or receive electromagnetic waves. Engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasures, remote sensing, and radio astronomy, which use electromagnetic waves to transmit information, rely on antennas to work. [0003] The development of radio technology is closely related to the development of antenna technology. Today's shortwave receiving antenna design generally adopts two methods: active and passive. In the design of passive antennas, the ratio of the maximum received power to the power density is usually used to determine the effective aperture of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/12H01Q1/36H01Q5/10H01Q5/314
CPCH01Q1/12H01Q1/36H01Q5/10H01Q5/314
Inventor 李勇李兵
Owner SICHUAN GANGZHENG ELECTRONICS TECH CO LTD